Cessna 172P Skyhawk, N54974, Associated Air Activities Inc: Accident occurred February 21, 2015 at Greater Kankakee Airport (KIKK), Kankakee County, Illinois

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf 

Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

Aviation Accident Data Summary - National Transportation Safety Board: https://app.ntsb.gov/pdf

Associated Air Activities Inc: http://registry.faa.gov/N54974

NTSB Identification: CEN15CA151
14 CFR Part 91: General Aviation
Accident occurred Saturday, February 21, 2015 in Kankakee, IL
Probable Cause Approval Date: 04/21/2015
Aircraft: CESSNA 172P, registration: N54974
Injuries: 2 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The flight instructor and student pilot were practicing landings to a full stop. During the 6th landing, the student pilot over controlled the airplane during the landing flare. The flight instructor attempted to correct the flight control inputs; however, he was unable to overcome the strength of the student pilot on the flight controls. The airplane struck a bank of snow on the left side of the runway and nosed over. The left wing and fuselage were substantially damaged. The flight instructor reported no pre-impact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The student pilot's improper flight control inputs resulting in the loss of control during the landing flare.

The flight instructor and student pilot were practicing landings to a full stop. During the 6th landing, the student pilot over controlled the airplane during the landing flare. The flight instructor attempted to correct the flight control inputs; however, he was unable to overcome the strength of the student pilot on the flight controls. The airplane struck a bank of snow on the left side of the runway and nosed over. The left wing and fuselage were substantially damaged. The flight instructor reported no pre-impact mechanical malfunctions or failures with the airplane that would have precluded normal operation.